Relicensing to MIT/Expat license, part 6: mention it in documentation.

CONTRIBUTING.md

@@ -4,41 +4,52 @@ To make things easier, here are a few tips:
 Reporting bugs, requesting features
 -----------------------------------
 
-- Best way to report bugs and request new features is to use GitHub
-  [issues](https://github.com/mosra/corrade/issues), but you can contact me
-  also any other way.
+*   Best way to report bugs and request new features is to use GitHub
+    [issues](https://github.com/mosra/corrade/issues), but you can contact me
+    also any other way.
 
 Code contribution
 -----------------
 
-- Building and installing Corrade is described in the
-  [documentation](http://mosra.cz/blog/corrade-doc/building-corrade.html).
-- Follow the project coding guidelines. In short - try to match style of
-  surrounding code and avoid any trailing whitespace. When in doubt, consult
-  coding guidelines, which are available also
-  [online](http://mosra.cz/blog/corrade-doc/corrade-coding-style.html).
-- Document your code. When updating or adding new API, make sure that Doxygen
-  documentation is up to date. Run
-
-      doxygen
-
-  in project root to generate the documentation and check that your
-  modifications didn't add any warnings.
-- Build unit tests (`-DBUILD_TESTS=ON` parameter to CMake) and run them
-  using
-
-      ctest --output-on-failure
-
-  in build directory. All tests should always pass. Add new tests or modify
-  the existing to make sure new code is properly covered (if possible). Here
-  is a [short tutorial](http://mosra.cz/blog/corrade-doc/unit-testing.html) to
-  help you with creating unit tests.
-- Best way to contribute is by using GitHub
-  [pull requests](https://github.com/mosra/corrade/pulls) - fork the repository
-  and make pull request from feature branch. You can also send patches via
-  e-mail or contact me any other way.
-- All your code will be released under license of the project, so make sure
-  you (or your employers) have no problems with it.
+*   Building and installing Corrade is described in the [documentation](http://mosra.cz/blog/corrade-doc/building-corrade.html).
+*   Follow the project coding guidelines. In short -- try to match style of the
+    surrounding code and avoid any trailing whitespace. When in doubt, consult
+    coding guidelines, which are available also [online](http://mosra.cz/blog/corrade-doc/corrade-coding-style.html).
+*   Document your code. When updating or adding new API, make sure that Doxygen
+    documentation is up to date. Run
+
+        doxygen
+
+    in project root to generate the documentation and check that your
+    modifications didn't add any warnings.
+*   Build unit tests (`-DBUILD_TESTS=ON` parameter to CMake) and run them
+    using
+
+        ctest --output-on-failure
+
+    in build directory. All tests should *always* pass. Add new tests or modify
+    the existing to make sure new code is properly covered (if possible). Here
+    is a [short tutorial](http://mosra.cz/blog/corrade-doc/unit-testing.html)
+    to help you with creating unit tests.
+*   Best way to contribute is by using GitHub [pull requests](https://github.com/mosra/corrade/pulls)
+    -- fork the repository and make pull request from feature branch. You can
+    also send patches via e-mail or contact me any other way.
+*   All your code will be released under license of the project (see [COPYING](COPYING)
+    file for details), so make sure you and your collaborators (or employers)
+    have no problems with it. If you create new files, don't forget to add
+    license header (verbatim copied from other files) and don't forget to add
+    yourself to license header of files you added or significantly modified,
+    for example:
+
+        /*
+            This file is part of Corrade.
+
+            Copyright © 2007, 2008, 2009, 2010, 2011, 2012, 2013
+                      Vladimír Vondruš <mosra@centrum.cz>
+            Copyright © YEAR YOUR_NAME <your@mail.com>
+
+            Permission is hereby granted, free of charge, to any person obtaining a
+            ...
 
 Contact
 -------

README.md

@@ -86,3 +86,9 @@ awesome idea? Feel free to visit my website or contact me at:
  * GitHub - http://github.com/mosra/corrade
  * E-mail - mosra@centrum.cz
  * Jabber - mosra@jabbim.cz
+
+LICENSE
+=======
+
+Corrade is licensed under MIT/Expat license, see [COPYING](COPYING) file for
+details.

doc/mainpage.dox

@@ -74,5 +74,32 @@ Feel free to get more information or contact the author at:
 - E-mail - mosra@centrum.cz
 - Jabber - mosra@jabbim.cz
 
+@section license License
+
+%Corrade is licensed under MIT/Expat license:
+
+>
+>   Copyright © 2007, 2008, 2009, 2010, 2011, 2012, 2013
+>             Vladimír Vondruš <mosra@centrum.cz>
+>
+>   Permission is hereby granted, free of charge, to any person obtaining a
+>   copy of this software and associated documentation files (the "Software"),
+>   to deal in the Software without restriction, including without limitation
+>   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+>   and/or sell copies of the Software, and to permit persons to whom the
+>   Software is furnished to do so, subject to the following conditions:
+>
+>   The above copyright notice and this permission notice shall be included
+>   in all copies or substantial portions of the Software.
+>
+>   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+>   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+>   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+>   THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+>   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+>   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+>   DEALINGS IN THE SOFTWARE.
+>
+
 */
 }